diff --git a/pkgs/tools/networking/offlineimap/default.nix b/pkgs/tools/networking/offlineimap/default.nix
index a14f8187b7d..f0e0bb805de 100644
--- a/pkgs/tools/networking/offlineimap/default.nix
+++ b/pkgs/tools/networking/offlineimap/default.nix
@@ -23,7 +23,7 @@ python2Packages.buildPythonApplication rec {
   doCheck = false;
 
   nativeBuildInputs = [ asciidoc libxml2 libxslt docbook_xsl ];
-  propagatedBuildInputs = with python2Packages; [ six kerberos rfc6555 ];
+  propagatedBuildInputs = with python2Packages; [ six kerberos rfc6555 pysocks ];
 
   postInstall = ''
     make -C docs man